2007
DOI: 10.1021/ja072526q
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Ionization Thresholds of Small Carbon Clusters:  Tunable VUV Experiments and Theory

Abstract: Small carbon clusters (C n , n=2-15) are produced in a molecular beam by pulsed laser vaporization and studied with vacuum ultraviolet (VUV) photoionization mass spectrometry.The required VUV radiation in the 8-12 eV range is provided by the Advanced Light Source (ALS) at the Lawrence Berkeley National Laboratory. Mass spectra at various ionization energies reveal the qualitative relative abundances of the neutral carbon clusters produced. By far the most abundant species is C 3 . Using the tunability of the A… Show more

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Cited by 91 publications
(114 citation statements)
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“…The C 3 has 12 valence electrons which group into 5 (degenerated) states with a large gap of about 7 eV between the two deepest levels and the three higher ones. Our calculated value of the IP for C 3 , E IP = −ε 5 = 10.8 eV, is in fair agreement with other calculations (12.0 eV [44,45]) and experimental measurements (11.6 eV [46], 12.1 eV [47], and 13.0 eV [48]). Our calculated IP is a bit too low.…”
Section: Static Properties and Optical Responsesupporting
confidence: 91%
“…The C 3 has 12 valence electrons which group into 5 (degenerated) states with a large gap of about 7 eV between the two deepest levels and the three higher ones. Our calculated value of the IP for C 3 , E IP = −ε 5 = 10.8 eV, is in fair agreement with other calculations (12.0 eV [44,45]) and experimental measurements (11.6 eV [46], 12.1 eV [47], and 13.0 eV [48]). Our calculated IP is a bit too low.…”
Section: Static Properties and Optical Responsesupporting
confidence: 91%
“…Clusters have naturally been the subject of numerous experimental and theoretical studies in recent years. [2][3][4][5][6][7][8] There are many potential technological applications of nanoclusters. Several metallic clusters have been shown to be very active catalysts 9,10 due to their high surface-area-to-volume ratios and unusual surface structures.…”
Section: Introductionmentioning
confidence: 99%
“…The ionization potentials of Pt, b Pt = 8.95868(11) eV [37], Os, b Os = 8.43823 (20) eV [38], and 12 C 16 , b C16 = 8(1) eV [39], were used for the calculation of Q values and mass excesses. In the case of b C16 the uncertainty was inflated to 1 eV due to significant deviations of [39] and [40] on the determination of the first ionization potential of carbon clusters up to C 15 . For 12 C 16 also the molecular binding energy of 97.3(27) eV must be considered.…”
Section: Resultsmentioning
confidence: 99%